August weather forecast
Hermosa, SD

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Weather in August

August, the last month of the summer in Hermosa, is another warm month, with an average temperature fluctuating between 82.8°F (28.2°C) and 61.5°F (16.4°C).

Temperature

With August's arrival, Hermosa's weather records an average high-temperature of a still warm 82.8°F (28.2°C), marking little difference from July's 84.7°F (29.3°C). Throughout August, Hermosa experiences a low-temperature average of 61.5°F (16.4°C).

Heat index

For August, the heat index is calculated to be 84.2°F (29°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an estimation of the warmth sensation when considering humidity levels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

The months with the lowest humidity are August and September, with an average relative humidity of 50%.

Rainfall

In Hermosa, in August, it is raining for 12.8 days, with typically 1.5" (38mm) of accumulated precipitation. In Hermosa, during the entire year, the rain falls for 118.8 days and collects up to 15.39" (391mm) of precipitation.

Snowfall

June through August are months without snowfall.

Daylight

In Hermosa, the average length of the day in August is 13h and 56min.
On the first day of August, sunrise is at 5:42 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:29 pm MDT.

Sunshine

The month with the most sunshine in Hermosa is August, with an average of 11.8h of sunshine.

UV index

In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 5 in August interprets into the following advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
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Frequently asked questions

How hot does it get in Hermosa in August?

During August, Hermosa experiences an average high-temperature of 82.8°F (28.2°C) and a low-temperature of 61.5°F (16.4°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 84.2°F (29°C).

What is the least humid month in Hermosa?

The months with the lowest humidity in Hermosa, South Dakota, are August and September, with an average relative humidity of 50%.

What is the average humidity in August in Hermosa?

The average relative humidity in August in Hermosa, South Dakota, is 50%.

How much does it rain in Hermosa in August?

In Hermosa, in August, during 12.8 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

When it does not snow in Hermosa?

In Hermosa, snow does not fall in June through August.

Does it snow in Hermosa in August?

In Hermosa, in August, it doesn't snow. In September, it regularly snows.

What is the average length of the day in August in Hermosa?

The average day length in August is 13h and 56min.

When are sunrise and sunset in August in Hermosa?

On the first day of August in Hermosa, sunrise is at 5:42 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:29 pm MDT.

What month has the most sunshine in Hermosa?

With an average of 11.8h of sunshine, August has the most sunshine of the year in Hermosa, South Dakota.

How many hours of sunshine does Hermosa have in August?

The average sunshine duration in August in Hermosa, South Dakota, is 11.8h.

What is the UV index reading in August in Hermosa?

In Hermosa, South Dakota, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Hermosa, SD

Average temperature in August - Hermosa, SD
  • Average high temperature in August: 82.8°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (32.5°F).

  • Average low temperature in August: 61.5°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).

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Average pressure in August
Hermosa, SD

Average pressure in August - Hermosa, SD
  • Average pressure in August: 29.9"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in August
Hermosa, SD

Average wind speed in August - Hermosa, SD
  • Average wind speed in August: 8.2mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).

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Average humidity in August
Hermosa, SD

Average humidity in August - Hermosa, SD
  • Average humidity in August: 50%

The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are August and September (50%).

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Average rainfall in August
Hermosa, SD

Average rainfall in August - Hermosa, SD
  • Average rainfall in August: 1.5"

The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in August
Hermosa, SD

Average rainfall days in August - Hermosa, SD
  • Average rainfall days in August: 12.8 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is December (4.8 days).

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Average snowfall in August
Hermosa, SD

Average snowfall in August - Hermosa, SD
  • Average snowfall in August: 0"

The month with the highest snowfall is April (5.43").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in August
Hermosa, SD

Average snowfall days in August - Hermosa, SD
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in August /
Average sunshine in August
Hermosa, SD

Average daylight in August / Average sunshine in August - Hermosa, SD
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in August: 11h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

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Average sunshine days in August
Hermosa, SD

Average sunshine days in August - Hermosa, SD
  • Average sunshine days in August: 14.5 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (11 days).

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Average UV index in August
Hermosa, SD

Average UV index in August - Hermosa, SD
  • Average UV index in August: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in August
Hermosa, SD

Average cloud cover in August - Hermosa, SD
  • Average cloud cover in August: 16

The months with the most cloud cover are February and April (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in August
Hermosa, SD

Average visibility in August - Hermosa, SD
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Hermosa, South Dakota, USA

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